<li class="collection-header">
  <div class="secondary-content">
    <a href="#!" title="添加选项" class="btn-add-item"><i class="mdi-content-add"></i></a>
    <a href="#!" title="编辑题纲" class="btn-edit"><i class="mdi-content-create"></i></a>
    <a href="#!" title="删除试题" class="btn-remove"><i class="mdi-content-clear"></i></a>
  </div>
  <div class="wx-markdown-preview">{{#showdown model.topic}}{{/showdown}}</div>
</li>
{{#each model.items}}
  <li class="collection-item {{#gt isAnswer 0}}grey lighten-5{{/gt}}" data-index="{{@index}}">
    <div class="secondary-content">
      <a href="#!" title="编辑选项" class="btn-edit-item"><i class="mdi-content-create"></i></a>
      <a href="#!" title="删除选项" class="btn-remove-item"><i class="mdi-content-clear"></i></a>
    </div>
    <div class="wx-markdown-preview">{{#showdown topic}}{{/showdown}}</div>
  </li>
{{/each}}
<li class="collection-item right-align {{#if isChanged}}{{else}}hide{{/if}}">
  <a href="#!" title="保存" class="teal-text btn-save">保存更新</a>
</li>